RAINBOW 
WHWN 
TROUT; TO SHOW 
. Lateral Line. 
Gill Opening. 
Gill Cover. 
Snout. 
. Nostril. 
EXTERNAL FEATURES. 
6. First Dorsal Fin. 
7. Second Dorsal Fin. 
8 Caudal Fin. 
9. Anal Fin. 
10. Pelyic Fins. 
. Pectoral Fins. 
